Lathe attachment.



B. S. WOOD.

LATHE ATTACHMENT.

PMIOATION FILED JUNE 24, 1911.

Patented Feb. 4, 1913.

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l h 314 anto@ @.511 lomwq f L www@ B. S. WOOD. LATH'E ATTACHMENT.

APPLICATION FILED JUNE 24, 1911.

1 ,052, 1 1 6, Patented Feb. 4., 1913.

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Y spindle to impart to theflatter rotary ,mo-

, Kansas, Y

To azz whom a may msm? A BEN S. WOOD, OF RUSSELL, KANSAS.

Lau-ng ATTACHMEN'L speciaca'uon orretters Patent. Application tiled June 24, 1.1911. Serial No. 635,238.

Patented Feb. 4,1913.

Be it knvvn that I, BEN. Russell, county of Russell, and Stateof have invented a newl andl useful Improvement in Lathe Attachments, of `Which the following is aspecification. i -My invention relates to mechanism 'adapted particularly for attachment to lathes, and designed toperform various kinds of irregular work-ordinarily requiring special and complicated-apparatus, such as. the cutting of key seats in shafts, the cutting of teeth in ratchet and gear wheels, the forimation of spiral grooves for twist drills,

.ableralon I t0 the lat and other work of ananalogous character.

My improved mechanism embodies a rotalig spindle adapted to 'carry'a cutting or mi ing tool, grinder, emery wheel, or other forming tool, according to the character vof the work to be performed, which spindle is mounted in a frame supported by and mova rotary driving shaftapplied thereof, suitable driving connections being provided between the driving lshaft and t1on,`and the mechanism beinY so disposed relative .to the Work supporter by the lathe that the cutting or forming tool may be operatively engaged withthe work.

` In the aecompanyingdrmvings: Figure 1 is a top plan View' of 'alathe having my improved mechanism applied thereto. Fig. 2 is a transverse sectional elevation on the line a-a of Fig. 1. Fig. 3 is a perspective' View of the mechanism removed from. the lathe. Fig. 4 is a side elevation of the for- Ward end of the cutter spindle showing the means for clamping the cutter operatiyely to the work. Fig. 5 is a view in section on the line a-a, Fig. 1; and Fig 6 is a View in section on the line b-b, Fig. 1.4

Referring to the drawings: My improved mechanism is shown as applied to operate' in connection with a lathe providedy as usual with a traveling bed or slide 1 adapted to carry the customary tool `est and mounted on a suitable frame Q. and having the usual driving spindle 3 vvhieh may be provided with a hurk or face plate, or

Aother means (not shown) for rotating the Work' held between the live center, 3 at one end and the dead'eenter 4 at the opposite end.

s. Wens, of

` detachably connected with the driving plane of the e and idriven by the mechanismv lthe same, a. frame'l'Q 'consisting of `with hubs -10?, shaft 7so as t0 slide freely therealora'gas In applying -my mechanism 1 Journal in suitable arms f5 and 6 fixed to theframeof the lathe, a horizontal supporting and driving shaft 7 having fixed to it at thehead end of the lathe, a pinion -8 driven by aear 9 attached to the driving spindle 3 fore alluded to. The `gear 9 is formed to .be

spindle sovthat the .gear may. be readlly removed and repllaced by the usual chuckor y face vplate of t elathe when thelatter'is to be used for its ordinary purposes; In .order that there will be no interference with the :chuck .orl face the chuck or face plate is substituted for the gear 9, the latter 1s formed with a hub displaced axfially or to one side of the general will cause the` ear to be disposed in a plane to one side of t e plane occupied-by the face plate or vchuck when the latteris substituted, yand' as the pinion 8 is in the same plane the gear,

when applied to the to'one side. oftheliability of interference therewith.. l

The drivingshaft 7 is formed with a key,

7'* lextenc'ling throughout its len ,0th, and

has mounted on it so as to slide freely along a 4fixed frame member 10'.and a relatively movable trame member 10", the member 10 being tired to and movable of the lathe, vvhile the memberlOb carries a cutter or shaping tool 12, presently tobe described. The. frame member 10u is 'provided Witha base' plate or bracket 10, seat- `ed on'and bolted to the'sliding bed 1,.by

means ofI bolts extending through transverse slots in the base lplate and into the bed. At

its ends 'the bracket is provided with lat-.

the face plate' or chuckspindle will.. be` disposed f' plate by the pinion 8 when v1o l gear as shown in Fig. 3, which p1n1on 8 and Without f with `the sliding bed. 1

yerally extending arms 10, 10, Vprovided v .108, loosely encircling the the base plate is"correspondingly"moved l The relatively movable frame member 10 is formed with lateralv arms iOf, 10'.- connected by al-longitudinal portion 10s, the arms 10210',r being provided at their ends with journal bearings 10", '10", loosely encircling the shaft and extending at the 'inner sides ofthe hubs 10e, 10, the result being that the frame member 10b lwill becarried along with. the frame 'member 10,

v gear.

while at the same time it may be swung orfulcrumed on the shaft as an axis', the purpose of which will presently appear.

Extending from the center ot" the longitudinal portion 10g of the frame member 10b, and in a direction transversely of the driving shaft 7 is a hollow arm 13 formed at its inner end with'a journal bearing 14,

key-way 16a extending sbme distance from.

its inner end. In this key-way extends a key or spline 17 projecting inwardly from the bore of al hub 18 on a bevel gear-19, which hub vis seated loosely in the journal bearing 14 so as to revolve freely therein, with its bore surrounding the spindle. By means of this constructionthe bevel gear 19 is drivingly interloclred or splined to the spindle, while the latter is capable ot an endwise movement with reference to the Near its outer end the spindle has a bearing in a collar 20 provided at its outer end with an annular flange 20a and seated at its inner end against an annular .shoulder 1b on the spindle 16. The collar 20 is encircled by a sleeve 21 seated between the annular shoulder 16" and the annular flange 2Q, which sleeve is cored out at its innercnd and formed with internal screw threads engaging the exteriorly `threaded end of the arm 13.

The function of the, sleeve 21 is to adjust the spindle endwise in the arm 13 so as to vary 'the relation of the cutting or forming tool 12 to the work operated ou,

f this adjustment being eli'ected through the medium of the collar 20, against the fiange of which the cutter wheel .12. is firmly clamped by means of a nut 22 screwedon the outer endl of the spindle. When the sleeve 21 is screwed inwardly on the arm 13, the sleeve will engage the annular v shoulder 1Gb on thespindle and will slide the latter endwise inwardly through the bevel gear, the spline of the hub of the gear and the'key-way in the spindle, permitting of this sliding movement while preserving the driving connection between the gear and spindle. When the sleeve 21 is screwed outwardly on th ,arm, the sleeve will engage the annular ange 20 and will slide the spindle outwardly in the opposite direction from its lirst adjustment. By the provision of the iiange 20 on the collar 20, and the v engagement of the inner end of the collar y with the shoulder 1Gb on the spindle, the cutter wheel may be clamped rmly and tightly in place on the Spindle without binding the adjusting sleeve 21, which latteris at all times tree to be turned to effect thev endwise adjustment of thespindle.

Rotary motion is imparted to the bevel noname gear .19 by means ot a driving'bevel gear 23 meshing therewith and provided with a hub 23 mounted to rotate in one of the 'journal bearings of the frame member 10".

lhe bore of this bevel gear is provided with an inwardly extending spline 23h extending loosely into thekey-way in the shaft 7, so that while the bevel vgear 23 will be rotated by the shaft, it will be'permitted to move along longitudinally thereoitas the frame 10 is correspondingly moved.

From the foregoing description it will be understood that the cutting wheel or shaping tool is carried in a frame, whith, while being movable longitudinally altnig and supported by the driving shafttrom which eek the cutter spindle receives its rotary moj tion, mav nevertheless 4be swung on said I shaft as an axis, sovthat the tool may be ad justed or moved to an operative or inoperative position with reference to the werk, the inoperative position of the frame being shown by dotted lines. in Fig. 3, where it will be seen that the frame is thrown back so4 that it will not interfere with the o eration of the lathe for ordinary lathe Werl;

lt will be understood that dillerent forms of cutting wheels or tools may be applied to the spindle, accordin to the nature ot the work to be perorme llt it is desired, tor instance, to cut slots in a shaft, the latter will be set in the machine between a center pin yon the driviuggear 9 and the usual center pin carried bv the dead spindle. By suitable means the shaft will be held from rotation, and motion being imparted to the gear 9, itwill be transmitted to the cutter through the medium of the pinion 8, shaftl 7, and intermeshing bevel gears 23 and 19. The cutter being then brought down 'on the work, will cut a slot therein.r llf it is de,- sired that this slot be continued longitudinally so as to constitute a key-way in the shaft, then the mechanism of the lathe by which the sliding bed is advanced is set in motion, and as the bed travels, the frame.

wardly, so as to vary the relation of the cutter to the work, and the latter in this way be caused to\ cut at ditterent points. ln order that the cutter may be held to the work operatively and-ted so as to cut deeper therein, l provide an abutmetitfilll adapted to engage the side of the were opposite the cutter, and in connection with this abutment l provide suitable means ttor moving the 'Y ends to be attained; but it l 'samerelativelyto the cutter so as to clamp'. the work betweenfthe two, the movement being such that the clamping action may` be.

increased as the action of the cutter'pro- .gresses, and .infthis way gradually deepen the slot` 'formed by the cutter. Inits rpreferred constructionthe abutment is in the formv ofa roller :with'a concave'faceto b ear 'site on the-work, which roller is mounted on the louter end ofanarm provided withA oppoy extending branch arms 26-26 pivoted at their inner ends as at 27-27 to the'hubs on an axis extending parallel with the ax'is .of the driving shaft 7, the arrangement being such that the roller carried by the-pivoted arms maybe swung to and from Athe cutter spindle.

Pivoted to the arm 25is a stirrup frame 28 straddling the outer end-of the arm 13 in which the cutter .spindle is mounted, through which stirrup is threaded an ad- I justing clamping screw 2Q, adapted at its inner end 'to bear againstl the -arrn l13 and provided at.. its outer end with a handle 31 for turning it. yByscre'wing the screw. in-

:the abutment roller will be drawn ainst the'lower side of the work and i will orce the cutter downwardlyon the o posite side of'the work, by which means t e cutter is clamped operativelygto the Work.

In the Aforegoing description and .in theaccompanying drawings I have disclosed my l ,mventlo'n in the forml which I prefer to parting 402 indicated above;

adopt and-which in actual .prac'tioe has been found to answer to a satisfactory degree the will be underthe mechanism shown may bel modified and changed without derom the limits of -my invention', provided the operation is substantially as and it will be understood stood that' variously "that the invention is not limited to any particular form or. construction of the parts except in so far as such fied in the claims.'

Having 'thus described my invention,.

limitations 'are speci- I1. In a machine of the type described`,the combinatio of means for supporting thework, ya roltjy shaft extendingparallel to Athe work and occupying a definite relation thereto, av Acutting' tool -pivotally mounted aus ' relation thereto, a frame lvI rected l pivotallyisupported uponsaldshaft so as to swing rearwa dly around the same as an axis and exten ing .transversely in a forward direction` thcrefrom, a Arotary tool mounted in the'frame' and adapted to act on the work, a toolrest carrying slide movable in' xed guides upon the machine frame and adapted-'to slide the tool frame along the shaft with it, and operative connections between the shaft and rotary tool, said connectionsbeing such as to permit the aforesaid movements.

3. In a lathe attachment, the -combination of means'for supporting the work, a mov ableslideadaptedto support the tool rest in front of the Work, a forwardly extending frame connected with the slide in rear'of the work and movablelwith tudinally of the work and also movable lbodily at will. upwardly and rearwardly relatively to the slideA away from the work, a cutting tool 'carried by adapted to act on the Work, rotating -the cutting tool.

4. .The combination of means for holding the work, a cutter to act on the same, a traveling supporting'framefor the cutter,-

theframe and t .and means for and meansadditional -to and travelingl with the supporting frame for clamping the eut ter operatively tothe work.

5. The combination of means for holding the work, a cutter t0 act onthe work, a

traveling supporting framev for the cutter,

and additional means carried by. the supporting frame for clamping the cutter slidingly to the Work.v

The combination of means for supporting the work,a=frame ascutter `spindle mounted in said Aframe an 'adjustable' end.-

wise therein, a driving gear supported 'by the -frame'and held againstendwise mo' ement thereon= and having 'driving engagement and means foradjusting said spindle endwise relative to. the drivwith the spindle,

ing gear; whereby t-he relation-f the 'cute ter'tothe workmaybe varied." g 7. The combination of means porting the work,a frame,"an abutment carried bythe. frame and adapted to engage the work'on oneV side, a l:utter carried by site-side? of the work, and means 'for'movl clamp t'e work between them. A

8.: In. combination Wit-h .means vfor supfing the @abutment relative tothe cutterto` portinghe work,v a frame,

said frame and adaptedtoact on the work,"

and means for forcing the-abutment and cutf ter toward each otheragainst the .work between them. Y

' 9. In combination lwith means 'for su'pporting'the work, a frame, an abutment conwith the frame and adapted to en'-l t -A said fraine and adapted to act on the'o'p o-f.

gege the Woik on one side, e yoke only` 'eeted with the abutment and engaging with the frame, und a Cutter cmried by the frame and adapted to'aet on the Woikjoo' the opposite side 4 l0.l In a mechanism of the type described7 the combination of means 'fos'upporting the Work?V n, rotary shaft, e 'frame eiide'ble on said Shaft and provided with e trans? Verseiy exei'iding arm, cutter 'spindle mounted iii the. ami and movable endwise therein, driving connections bet-Ween the shaft and spindle, and e sleeve adjustable longitudinally of the arm and engaging' the spindle.

11. 'in :i lathe and inV combination with a Lemie driving spindle and means foi* supporiig the Work, a rotary shaft extending pareil-oi with the driving spindle, a driving geel: ou Said shaft, a cut-tei' Spindie supported by the Shaft and operated thereby., and' n removable gear mounted von the driving Spindle and engaging the rst named geai,`s`f1id ren'iov ebie gea? having .its hub offseta'iiaily with relation to the piane o" the geel. I' i In testimony whereof hereunto set my hand his 20th dey of June 191i, inthe presence of two' attestiiig Witnesses.

i BEN Si. "WUD, 1ifi/vitnesses:

LOUIS BAKKER, U A. Syl'meommz. 

